Chemistry: Matter and Change

Chapter 5: Electrons in Atoms

Standardized Test Practice

1
What is the frequency of yellow light , which has a wavelength of 5.56 x 10-7m?

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A)1.85 x 1015 Hz
B)1.85 x 1015 m/s
C)5.40 x 1014 Hz
D)5.40 x 1014 m/s
2
The part of the electromagnetic spectrum that humans can see is the ________.
A)visible spectrum
B)infrared spectrum
C)ultraviolet spectrum
D)a, b, and c
3
A wavelength of 500 nm is associated with the _______ portion of the electromagnetic spectrum.
A)visible
B)infrared
C)ultraviolet
D)microwave
4
In the photoelectric effect, increasing the frequency of the light increases the ________ of the ejected electrons.

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A)number
B)energy
C)size
D)wavelength
5
If a radio station were to increase its frequency from 94.5 MHz to 99.1 MHz, what would happen to the station's wavelength?

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A)The wavelength would not change.
B)The wavelength would go up.
C)The wavelength would go down.
D)The wavelength would double.
6
The Heisenberg uncertainty principle states that ____________.
A)no two electrons in the same atom can have the same set of four quantum numbers
B)two atoms of the same element must have the same number of protons
C)it is impossible to simultaneously know the precise position and velocity of a particle
D)electrons of atoms in their ground states enter energetically equivalent sets of orbitals singly before they pair up in any orbital of the set
7
The ground state of hydrogen corresponds to the _________.
A)zeroeth energy level
B)first energy level
C)second energy level
D)highest energy level
8
Which of the following statements is true?
A)Each set of d orbitals contains seven orbitals.
B)Each set of d orbitals can hold a maximum of 14 electrons.
C)The first energy level contains only s and p orbitals.
D)All s orbitals are spherically shaped.
9
What is the primary difference between the 1s and the 2 s orbitals?

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A)shape
B)size
C)number of electrons
D)number of neutrons
10
In the Bohr model of the hydrogen atom, which of the following transitions results in light you can see?

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A)n = 6 to n = 1
B)n = 6 to n = 2
C)n = 6 to n = 3
D)n = 6 to n = 4
11
The principle that states each electron occupies the lowest energy orbital available is the ______________.
A)aufbau principle
B)uncertainty principle
C)exclusion principle
D)photoelectric principle
12
The valence orbitals in an atom are the ___________.
A)innermost orbitals
B)second energy level
C)d orbitals
D)outermost orbitals
13
How many valence electrons does a group 1A metal atom have?
A)1
B)2
C)3
D)4
14
What would be the proper noble gas notation for oxygen?

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A)[Ne]2p4
B)[Ne]2p1
C)[He]2p4
D)[He]2p1
15
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Given the above electron dot structure, what further information is required to find the identity of element X?
A)the number of valence electrons
B)the period in which the element is found
C)the number of neutrons
D)the electric charge
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